Desc: The Sea Bat: Directed by Lionel Barrymore, Wesley Ruggles. With Raquel Torres, Charles Bickford, Nils Asther, George F. Marion. The West Indies island of Portuga exists mainly for sponge diving. But the best area of collection is frequented by a very large manta ray. Nina loses her brother to the creature and is comforted by a newly arrived minister, who seems very interested in an old poster offering a reward for a convict recently escaped from nearby Devil's Island. More deaths attributed to the sea bat follow before Nina resolves her feelings for her comforter.